No, they are not. Mindfulness is about being aware of your senses, feelings, thoughts, everything, without evaluating or judging them. Like if you have a bad thought, you note it is there, but do not judge or start analyzing it. You treat it like a noise from a radio, not as something that requires you to react.

Breathing excercises make midfulness easier.

Yea there's no real world analogue, but still, oil would be better than cocaine, since it corresponds to the role of spice in trade and economics which fuel the politics. The spacing guild uses the psychedelic effects of spice to travel faster than light, making interstellar travel possible = oil makes efficient global travel possible.

And if you think of about a desert world occupied by foreign powers to get their hands on precious resource for trade, it corresponds to Arrakis and Middle East. The Fremen culture of Dune have notable Arabic roots.